APN: Access Point Name, supplied by your carrier/SIM supplier. There are often
several options, and these are unique to the carrier.
Dialup No: The number to “dial” to get an internet connection from the network.
Standard setting is normally fine.
PIN Type: select based on if your SIM card has a PIN applied.
Connection Type: Normally (default) “Auto” is fine. If you want or need to force
either 3G or 4G, you can do that here.
Band: Select “Auto” (default), or alternately, choose the bands the modem can
use to connect.
Allow These authentication: select the authentication method used for a
username/password protected APN – note that PAP is unencrypted, CHAP is
weakly encrypted.